屋顶花园的防水需注意的问题（Problems needing attention in waterproof of Roof Garden）.doc

屋顶花园的防水需注意的问题（Problems needing attention in waterproof of Roof Garden） Roof garden is not only the cooling and heat insulation effect is good, and can beautify the environment, clean air, improve the microclimate, enrich the city pitching landscape, can compensate the building occupied the green ground, greatly improve the city green coverage rate, is a worth popularizing roof form. The application effect and building waterproofing treatment directly influence the success or failure of Roof garden safety, once found Water Leakage, have some or all rework. So the waterproof layer is the key technology of the Roof garden, is one of the most concerned problems. Analysis of 1 Water Leakage reasons Both the original design and construction of the Roof garden, or in the housing has been built on the roof top of building Roof garden, in the daily use during and after the completion of the construction, the waterproof and drainage system are advised to destroy the roof, causing the roof Water Leakage. The reasons are as follows: There are 1.1 defects of original roof waterproof layer The structure layer and the waterproof layer even to maintain the original practice, but also in the general prefabricated hollow board waterproof layer, so it is still at the inevitable leakage along the weak link in the mouth and parapet gutter. Especially the rigid waterproof roof, the most serious problem is in after the completion of construction of waterproof layer may appear cracks and Water Leakage. There are many reasons for the cracks: roof expansion caused by climate change and the sun and cold; warping deformation of roof panel after the stress changes caused by the foundation settlement; the roof or wall bearing recoil slurry shrinkage causes the roof panel; besides the variable or material shrinkage. 1.2 the construction of Roof garden destroyed the original waterproof layer The roof construction of the Roof garden is Water Leakage in May, is easy to appear a number of landscape c